Prep supplies you will need to buy. The kneedable eraser you can get at an art store or online. I used Generals kneeded eraser. Neoprene, Frozen cpu does sell some, I got my blue shop towels from Home depot and the Armaflex as well.
http://www.homedepot.com/h_d1/N-5yc1v/R-100029293/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=shop+towel&storeId=10051
http://www.homedepot.com/h_d1/N-5yc1v/R-100539553/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=armaflex&storeId=10051
http://www.homedepot.com/h_d1/N-5yc1v/R-100555712/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=white+eletrical+tape&storeId=10051
http://www.cheapjoes.com/art-supply/GPC140_8499_generals-giant-kneaded-eraser.asp
http://www.frozencpu.com/products/13181/noi-23/Neoprene_Sheet_-_Phase_Change_Insulator_-_200mm_x_200mm_x_10mm.html
http://www.homedepot.com/h_d1/N-5yc1v/R-100029293/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=shop+towel&storeId=10051
http://www.homedepot.com/h_d1/N-5yc1v/R-100539553/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=armaflex&storeId=10051
http://www.homedepot.com/h_d1/N-5yc1v/R-100555712/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=white+eletrical+tape&storeId=10051
http://www.cheapjoes.com/art-supply/GPC140_8499_generals-giant-kneaded-eraser.asp
http://www.frozencpu.com/products/13181/noi-23/Neoprene_Sheet_-_Phase_Change_Insulator_-_200mm_x_200mm_x_10mm.html





